Braiding-machine yarn carrier



July 15 1924.

Io. A. FREDERICKSON BRAIDING MACHINE YARN CARRIER Filed oct.`12, 1,922

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UNITED STATES PATENTv OFFICE.

OTTO A. FREDERICKSON, OF WETHERSFIELD, CONNECTICUT, ASSIGNOR TO THE AMERI- CAN WIREMOLD l COMPANY, CONNECTICUT.

OTE' HARTFORD, CONNECTICUT A CORPORATION OF BRAIDING-MACHINE YARN CARRIER.

Application filed October 12, 1922. Serial No. 594,012.

To all whom t may concern.'

Be it known that I, OTTO A. F REDERIGK- soN, a citizen of the United States, residing at IVethersfield, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Braiding- Machine Yarn Carriers, of which the following is a specification.

This invention relates to the construction of the yarn carriers provided for use in rotary braiding machines of the type in which there are a plurality of radially arranged inner yarn carriers that are revolved rapidly in one direction and a plurality of annularly arranged outer yarn carriers that are revolved rapidly in the opposite direction, the yarn from .the outer carriers beingv raised and lowered as the carriers are revolved so as to pass over and under the yarns from the inner carriers and form the braid at the center ofthe machine. A machine of this class is illustrated in Patent #1,331,672 to Anker Petersen, February 4L, 1920.

In the prior machines of this character the inner ends of the inner yarn carriers have been supported by rolls that run on a track, either fixed or rotatable, and the outer ends of these carriers have been supported by rolls that are arranged on vertical arbors and run in a groove formed in the inner wall of the rotary drum that conveys the outer yarn carriers, which wall is provided at intervals with vertical slots for the passage of the yarns from the outer carriers. As the inner yarn carriers are revolved rapidly in one direction and the wall of the drum which carries the outer yarn carriers is revolved rapidly in ther opposite direction, the resultant speed between the wall of the drum and the rolls on the outer ends of the inner carriers is high. @wing to the high speed and the outward pressure incident to the centriff ugal action of the inner carriers these rolls and their arbors which cannot, on account of the environment, be eiiiciently lubricated,

wear out very quickly and because of the lint gathered from the yarns they rolls soon stick and when they cease rotating they quickly wear flat. In order to reduce wear and noise it has been considered necessary to make the slots in the drum wall through which the outer yarns pass, and over which slotsthe rolls run, as narrow as possible, a factor which produces undue wear on the yarns, increases the amount of lint gathered from the yarns and obstructs the free'passage of knots made when the yarns break or the yarns run out and a new supply is attached.

The object of the present invention is to provide a construction for the inner yarn carriers of a machine ofthis character which will operate at a high speed more smoothly andwith less noise and wear, than the prior constructions, and which will avoid hammering of the parts as the slots are passed by the inner carriers, and at the same time will permit the slots in the drum for the passage of the yarns from the outercarriers to be made wider thus lreducing` friction and wear on the yarns and permitting the free feed of such knots as are necessary to make in the outer yarns.

This end is attained in a very simple manner by removing the supporting rolls and their vertical arbors from the outer ends of the inner carriers and providingv in place thereof shoes or flanges which will travel in the supporting groove in the wall of the drum and sustain the weight of the outer ends of the carriers, with comparatively little wear and no hammering as they pass the yarn slots. These shoes are suiiiciently long to ensure stability to and freedom from vibration of the inner carriers as they are revolved, and the yarn slots in the drum wall may be as wide as desirable to permit the free passing of the outer yarns and all knots through the-m.

In the accompanying` drawings Figure 1 shows a plan with portions broken away, of a few yarn carriers and the supporting and operating parts of a braiding machine of the type mentioned, the inner carriers being constructed according to this invention. Fig. 2 shows a vertical section of the parts of the machine shown in 1. Fig. 3 shows a detail of the outer end of one of the inner yarn carriers illustrating the relation of the shoe to the inner wall of the drum and a yarn slot therethrough, Fig. 4l shows in elevation the slotted wall of the drum and indicates the position of a yarn carrier back of the slot.

In the type of machine illustrated the in ner bobbins, cops or tubes 6, which comprise braided or twisted cotton, linen or silk yarn wound upon cores 7, are placed in the inner los carriers 8. These carriers are frame-like and they are arranged radially in the machine. At the inner ends the inner carriers have rolls 9 which run upon a traclrorn lthe upper tace ot a dish 1102 vthe hub o'tfivliich is V'fastened to a tubular supportll secured to the main trame 12 so as to stand upright at the center of the machine. y

At their outer ends the4 barriers have rolls 13 which are engaged by `pushing rolls 14 fixed to spindles 15 mounted in brackets 16 fastened to the upper tace of a plate 1T, the huhy otwvhich is .secured to the upper end of a tubular shaft v18 that surrounds the tubular support 11.v Secured to the lovver end ot the shaft 18 is a gear 19. rEhe driving` pinion 2O meshes with this gear and rotates the parts in such `manner/that Athe pushing rolls 14 engage. the carrier rolls 13 and causerthe carriers'to revolve about vthe axis of the machine. Anti-friction bearings 21 are arranged betvveen the gear 19 and a race ring .22 attached to the frame for supporting these parts. The inner ends ot the pusher roll spindles 15- are provided with pinions Q3 that mesh With teeth on the under face ot the lined dish 10. This cause the' pushing rolls 14 to rotate as they are revolved and push the inner carriers around.

The outer bobbins, cops or tubes 2,4 ot braidedor twisted cotton, linen or silk yarn Wound upon paper cores 25 are placed in brackets 26 that are mountedL on a ring` 2T which is 'fastened to the upper edge ot the drum 28. The hub 29 ot this drum is tree to turn on the tubular shaft 18 and the drum is supported by anti-friction bearings 30 arranged between its under tace and the top of an annular web 31 on the top orn the gear V19. @n the under tace of the drum is a gear that is engaged by the driving pinion 2O so that When the driving pinn ion is rotated and the inner carriers are revolved in one direction the outer carriers vvill be revolved in the opposite direct-ion.

The yarns 33 from the inner carriers are led through guides direct-ly to the under side oit the braiding sleeve 34,211; the center of the. machine, While the yarns 35 from the outer carriers are led down vthrough thread guides 36 and thence through slots 37 in the wall of the drum .and to the braiding sleeve. The thread guides 36 through which the outer yarns pass are at the ends or levers 3S which are pivoted to the outer Wall ot the drum and have rolls 39 that run in a cam groove40 Vin a cam ring that is attached to the top vof the main trarne. This means causes the yarns from the outer carriers to pass'belov.v and above the inner carriers as the carriers are revolved, an action Weill known' in this type of machine.

For supporting the outer ends and sustaining the Wear incident to the centrifugal thrust et the inner carriers, horizontal eX- tensions are formed on, or shoes 41, are attached to the outer ends of' these carriers. rlhe outer edges ot thesel shoes are curved betiveenV their inwardly turned end 'portions on approximately the radiusiot1 theA drum and they extend into a groove 42 formed rin lthe inner lWall ot the drum. To place the inner carriers after they have been loaded with yarn, the shoes are inserted into the groove 42 and r,the rolls 9 at the inner ends-ot the carriers are dropped upon the traclt With the rolls in front ot the pushing rolls 14. The inner carriers merely iioat, they are not permanently astened to any part, as is necessary in order that the yarns may pass above and below and so that they can be quickly removed and replaced as conditions require. then the machine is in operation the driving rolls 14 push against the carrier rolls 13 and cause the revolution ot the carriers'A As a result of the extended bearing surfaces ot the slices which support the outer ends oit' the inner carriers the Wear is slight and the carriers do not jump and vibrate While they are being revolved and the yarns arel being univound. There being no rolls to flat or arbors to Wear in their bearings.

noise and shake are eliminated. Furthermore the shoes Which sustain the outward or centrifuga-l thrust ot the carriers areso long that there is n0 bumping or hammering as they pass the slots 37 through which the yarns from the outer carriers pass.J and theretore these slots may be made as Wide as necessary .to relieve the yarns from rubbing, and also to permit lt'nots made when the ends of yarns are reached andV others attached, or When the tivo ends of a broken yarn are fastened together, to pass freely through the slots. The improvement described enables these machines lto be vrun faster with less Wear. noise and vibration of the carriers than the prior constructions. with a consequent greater and better production.

rlhe invention claimed is 1. In a braiding machine of the typeprovided with a drum having an annular groove formed in its inner surface to open inwardly and having vertical slots formed in its Walls in intersecting relation with said groove to vpr vide pass ges for the outer yarns.v` and constructed to support inner yarn carriers adjacent their inner and outer ends respectively to operate in a horizontal plane; inner yarn carriers tor supporting yarn masses with their axes extending in a horizontal direction radially of the drum, and a shoe secured to the outer end ot each of said earriers and formed as a tlat plate extending troni its carrie-r into said groove in a hori- Zontal plane containing the Ilongitudinal axis Sii llt)

of the yarn mass and constructed to span the vertical slots and slide smoothly over them as the carriers are advanced in their circular path.

2. In a braiding machine of the type provided with a drum having an annular groove formed in its inner surface to open inwardly and having vertical slots formed in itswalls in intersecting relation with said groove to provide passages for the outer yarns, and constructed to support inner yarn carriers adjacent their inner and outer ends respectively to operate in a horizontal plane; inner yarn carriers for supporting yarn masses with their axes extending in a horizontal direction radially of the drum, and a shoe projecting from the outer end of each of said carriers and formed as a flat plate extending from its carriersin a horizontal plane containing the longitudinal axis of the yarn mass to enter the groove by movement radially of the drum and constructed to span the vertical slots and slide smoothly over them as the carriers are forced outwardly by centrifugal force while traveling in their circular path.

3. In a high-speed braiding machine, the combination of a revolving drum having an annular groove formed in its inner face to open inwardly and the depressed wall of the groove formed as a thrust bearing surface, said drum having vertical slots formed through its walls so that they intersect the annular groove and provide passages of sufficient width to permit yarn to run freely therethrough and be reciprocated therein without fraying, inner yarn carriers arranged in a horizontal plane and supporting yarn masses with their axes extending radially of the drum, a race-way for supporting the inner end of said yarn carriers, a shoe on each of the carriers formed as a flat plate extending from the carriers into the groove in a horizontal plane containing the longitudinal axis of the yarn mass and having a curved face constructed to slide against said thrust bearing surface and span the vertical slots to slide smoothly over them under the outward pressure of centrifugal force, and means for advancing the carriers around their circular path.

fl. In a high-speed braiding machine, the combination of a revolving drum having an annular groove formed in its inner face to open inwardly and having vertical slots formed through its walls in intersecting relation with the groove to provide passages of sufcient width to permit yarn to run freely therethrough without fraying, inner yarn carriers arranged in a horizontal plane and supporting yarn masses with their axes extending radially of the drum, a race-Way for supporting the inner end of said carriers, a shoe on each of the carriers adapted to be moved freely into said groove radially of the drum and formed as a flat plate extending from the carriers into the groove in a horizontal plane containing the longitudinal axis of the yarn mass and constructed to span the vertical slots to slide smoothly over them under the outward pressure of centrifugal force, and means for traveling the carriers in said horizontal plane.

5. In a braiding machine, the combination of a revolving drum supporting outer yarn supplies and having a vertical wall, the inner surface of which has formed therein an annular groove of less depth than the thickness of said wall, said drum having vertical slots formed through its walls so that they intersect the annular groove and provide passages of suliicient Width to permit yarn torun freely therethrough and be reciprocated therein without fraying, inner yarn carriers arranged in a horizontal plane and supporting yarn masses with their axes extending radially of the drum, a race-way for supporting the inner end of said carriers, rollers upon the carriers engaging the race-way, a shoe on each of the carriers formed as a flat plate extending from the carriers into the groove in a horizontal plane containing the longitudinal axis of the yarn mass and constructed to span the vertical slots and slide smoothly over them under the outward pressure of centrifugal force, and rotating drivers for traveling the inner yarn carriers.

6. In a braiding machine, the combination of a revolving drum having an annular groove formed in its inner face to open inwardly and having relatively wide vertical slots formed through'its walls in intersecting relation with the groove to provide passages of suiicient width to permit yarn to run freely therethrough without chaiing, inner yarn carriers arranged in a horizontal plane and supporting yarn masses with their axes extending radially of the drum, a raceway for supporting the inner end of said carriers, a shoe on each carrier formed as a long flat plate rounded at its ends and extending from the carrier in the horizontal plane of the axis of the yarn mass and having a marginal side that enters said groove to provide a long curved bearing that conforms to and slides against the curved rear wall of the groove to span the vertical slots and slide smoothly over vthem under the outward pressure of centrifugal force, and means for advancing the carriers around their circular path.

OTTO A. FREDERICKSON. 

